empty_value_files.patch

diff --git a/mappers/file.inc b/mappers/file.inc
index 7690f6e..51aca47 100644
--- a/mappers/file.inc
+++ b/mappers/file.inc
@@ -79,6 +79,9 @@ function file_feeds_set_target($source, $entity, $target, $value) {
   $i = 0;
   $field = isset($entity->$target) ? $entity->$target : array();
   foreach ($value as $v) {
+    if(empty($v)){
+      continue;
+    }
     if ($file = $v->getFile($destination)) {
       $field['und'][$i] = (array)$file;
       $field['und'][$i]['display'] = 1; // @todo: Figure out how to properly populate this field.